Most studies using an expectancy-confirmation or expectancy-disconfirmation paradigm posit that an individual’s expectations largely determine the overall satisfaction with a given object, person, service, or product. 
“Expectations” refers to one’s beliefs about future events. By nature, the human mind projects and considers future scenarios to anticipate required actions, for both survival and social acceptance. “Disconfirmation” is the extent to which an event is evaluated as either exceeding or falling short of expectations.